/* ===== Kelang Link - Shared Styles ===== */

:root {
  --primary: #0055CC;
  --primary-dark: #003D99;
  --primary-darker: #002266;
  --primary-light: #E8F0FE;
  --accent: #F5A623;
  --accent-light: #FFF3D6;
  --bg-dark: #0A1628;
  --bg-section: #F4F7FC;
  --bg-card: #FFFFFF;
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --text-light: #CBD5E1;
  --border: #E2E8F0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,.1);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; font-size:16px; }
body { font-family:-apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif; color:var(--text-primary); background:#fff; line-height:1.6; }
a { text-decoration:none; color:inherit; }
ul { list-style:none; }
img { max-width:100%; }

.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.text-center { text-align:center; }
.mx-auto { margin-left:auto; margin-right:auto; }

/* ===== Top Bar ===== */
.top-bar { position:fixed; top:0; left:0; width:100%; z-index:1001; background:var(--bg-dark); color:var(--text-light); font-size:13px; padding:7px 0; border-bottom:1px solid rgba(255,255,255,.06); }
.top-bar .container { display:flex; justify-content:space-between; align-items:center; }
.top-bar a { color:var(--text-muted); margin-left:16px; transition:color .2s; }
.top-bar a:hover { color:var(--accent); }

/* ===== Header ===== */
body { padding-top:58px; }
nav ul { display:flex; gap:4px; align-items:center; }
nav > ul > li { position:relative; }

/* Dropdown */
.nav-dropdown { position:absolute; top:100%; left:50%; transform:translateX(-50%) translateY(8px); background:#fff; border-radius:12px; box-shadow:0 12px 48px rgba(0,0,0,.15); padding:8px; min-width:200px; opacity:0; visibility:hidden; transition:all .25s; pointer-events:none; }
nav > ul > li:hover .nav-dropdown { opacity:1; visibility:visible; transform:translateX(-50%) translateY(0); pointer-events:auto; }
.nav-dropdown a { color:#334155; padding:10px 18px; border-radius:8px; font-weight:500; white-space:nowrap; background:transparent; }
.nav-dropdown a:hover { background:var(--primary-light); color:var(--primary); }
.nav-dropdown a::after { display:none; }
.nav-dropdown .dd-title { font-size:12px; font-weight:700; color:#94a3b8; text-transform:uppercase; letter-spacing:1px; padding:8px 18px 4px; }

/* Mega Menu */
.nav-dropdown { padding:16px; min-width:520px; }
.nav-dropdown .dd-grid { display:grid; grid-template-columns:1fr 1fr; gap:8px; }
.nav-dropdown .dd-group { }
.nav-dropdown .dd-group-title { font-size:12px; font-weight:700; color:#3b82f6; text-transform:uppercase; letter-spacing:1px; padding:6px 12px 4px; margin-bottom:2px; }
.nav-dropdown .dd-item { display:block; padding:7px 12px; border-radius:6px; font-size:13px; color:#334155; transition:all .15s; white-space:nowrap; }
.nav-dropdown .dd-item:hover { background:var(--primary-light); color:var(--primary); }
.nav-dropdown .dd-item::after { display:none; }
nav > ul > li:nth-child(3) .nav-dropdown { min-width:280px; }
nav > ul > li:nth-child(4) .nav-dropdown { min-width:200px; }

/* ===== Footer ===== */
footer { background:var(--bg-dark); color:var(--text-light); padding:48px 0 24px; }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; margin-bottom:40px; }
.footer-brand .logo { color:#fff; font-size:24px; margin-bottom:16px; }
.footer-brand p { font-size:14px; line-height:1.8; color:var(--text-muted); max-width:300px; }
.footer-col h5 { font-size:14px; font-weight:700; color:#fff; margin-bottom:16px; }
.footer-col a { display:block; font-size:13px; color:var(--text-muted); padding:4px 0; transition:color .2s; }
.footer-col a:hover { color:var(--accent); }
.footer-bottom { text-align:center; font-size:13px; color:var(--text-muted); padding-top:20px; border-top:1px solid rgba(255,255,255,.08); }

/* ===== Buttons ===== */
.btn { display:inline-flex; align-items:center; gap:6px; padding:11px 28px; border-radius:var(--radius-sm); font-weight:600; font-size:15px; border:none; cursor:pointer; transition:all .3s; line-height:1.4; }
.btn-primary { background:var(--primary); color:#fff; }
.btn-primary:hover { background:var(--primary-dark); transform:translateY(-2px); box-shadow:0 6px 20px rgba(0,85,204,.3); }
.btn-accent { background:var(--accent); color:var(--bg-dark); }
.btn-accent:hover { background:#E09500; transform:translateY(-2px); box-shadow:0 6px 20px rgba(245,166,35,.3); }
.btn-outline-light { border:2px solid rgba(255,255,255,.5); color:#fff; background:transparent; }
.btn-outline-light:hover { background:rgba(255,255,255,.1); border-color:#fff; }
.btn-outline { border:2px solid var(--border); color:var(--text-secondary); background:#fff; }
.btn-outline:hover { border-color:var(--primary); color:var(--primary); }

/* ===== Section Common ===== */
section { padding:90px 0; }
.section-label { display:inline-flex; align-items:center; gap:8px; color:var(--primary); font-size:14px; font-weight:700; text-transform:uppercase; letter-spacing:2px; margin-bottom:14px; }
.section-label::before, .section-label::after { content:''; display:block; width:24px; height:2px; background:var(--primary); border-radius:2px; }
.section-title { font-size:36px; font-weight:800; color:var(--text-primary); margin-bottom:14px; letter-spacing:-.5px; line-height:1.25; }
.section-desc { font-size:17px; color:var(--text-secondary); max-width:620px; margin-bottom:48px; line-height:1.7; }

/* ===== Animation ===== */
.fade-in { opacity:0; transform:translateY(30px); transition:opacity .6s ease, transform .6s ease; }
.fade-in.visible { opacity:1; transform:translateY(0); }

/* ===== Responsive ===== */
@media(max-width:1024px){
  .adj-grid { grid-template-columns:repeat(2,1fr); }
  .ai-grid { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; gap:32px; }
}
@media(max-width:768px){
  section { padding:64px 0; }
  .section-title { font-size:28px; }
  .section-desc { font-size:15px; margin-bottom:36px; }
  nav ul { gap:0; }
  nav a { font-size:14px; padding:14px 10px; }
  .contact-grid { grid-template-columns:1fr; gap:36px; }
  .form-row { grid-template-columns:1fr; }
  nav .nav-dropdown { display:none; }
}
@media(max-width:480px){
  .hero h1 { font-size:28px; }
  .hero .subtitle { font-size:16px; }
  section { padding:48px 0; }
  .section-title { font-size:24px; }
  .adj-grid, .ai-grid { grid-template-columns:1fr; gap:16px; }
  .sol-card-img { height:150px; }
  .footer-grid { grid-template-columns:1fr; gap:24px; }
  .form-card { padding:24px; }
  nav a { font-size:13px; padding:14px 6px; }
}